20312303311321 has 8 divisors (see below), whose sum is σ = 23214609582080. Its totient is φ = 17410134204288.

The previous prime is 20312303311271. The next prime is 20312303311373. The reversal of 20312303311321 is 12311330321302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20312303311321 - 2¹⁷ = 20312303180249 is a prime.

It is a super-2 number, since 2×20312303311321² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20312303311021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33973401 + ... + 34566118.

It is an arithmetic number, because the mean of its divisors is an integer number (2901826197760).

Almost surely, 2^{20312303311321} is an apocalyptic number.

It is an amenable number.

20312303311321 is a deficient number, since it is larger than the sum of its proper divisors (2902306270759).

20312303311321 is an equidigital number, since it uses as much as digits as its factorization.

20312303311321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68581863.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 20312303311321 its reverse (12311330321302), we get a palindrome (32623633632623).

The spelling of 20312303311321 in words is "twenty trillion, three hundred twelve billion, three hundred three million, three hundred eleven thousand, three hundred twenty-one".